/**
 * Copyright 2008 - 2012
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * 
 * @project loon
 * @author cping
 * @email：javachenpeng@yahoo.com
 * @version 0.3.3
 */
package loon.core;

public interface Callback<T> {

	public static abstract class Chain<T> implements Callback<T> {

		private Callback<T> _failure;

		public Chain(Callback<T> f) {
			this._failure = f;
		}

		@Override
		public void onFailure(Throwable t) {
			if (_failure != null) {
				_failure.onFailure(t);
			}
		}
	}

	void onSuccess(T result);

	void onFailure(Throwable t);
}
